This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
| n | a(n) |
|---|---|
| 0 | 0 |
| 1 | 0 |
| 2 | 1 |
| 3 | 1 |
| 4 | 2 |
| 5 | 3 |
| 6 | 6 |
| 7 | 11 |
| 8 | 23 |
| 9 | 46 |
| 10 | 98 |
| 11 | 207 |
| 12 | 451 |
| 13 | 983 |
| 14 | 2179 |
| 15 | 4850 |
| 16 | 10905 |
| 17 | 24631 |
| 18 | 56011 |
| 19 | 127912 |
| 20 | 293547 |
| 21 | 676157 |
| 22 | 1563372 |
| 23 | 3626149 |
| 24 | 8436379 |
| 25 | 19680277 |
| 26 | 46026618 |
| 27 | 107890609 |
| 28 | 253450711 |
| 29 | 596572387 |
| 30 | 1406818759 |
| 31 | 3323236238 |
| 32 | 7862958391 |